Metal head for use in a golf club

Abstract

A metal head for use in a golf club includes a main hollow body and a striking plate. The main hollow body has an annular flange extending from a front surface thereof with a plurality of spaced protrusions extending outward from a distal end of the annular flange, and the striking plate has an annular dovetail groove defined in an inner surface thereof for receiving the annular flange and the protrusions. Thus, the main hollow body and the striking plate can be connected securely together by pressing the striking plate against the main hollow body to such an extent that the protrusions are deformed and got stuck in flared corners of the annular groove.

What is claimed is:  
     
       1. A metal head for use in a golf club, comprising: 
       a main hollow body having an annular flange extending from a front surface thereof, said annular flange being formed with a plurality of spaced protrusions extending outward from a distal end of said annular flange; and  
       a striking plate having an annular groove defined in an inner surface thereof for receiving said annular flange and said protrusions, said annular groove being flared inward to form at least one flared corner at the bottom thereof;  
       whereby said main hollow body and said striking plate can be connected securely together by pressing said striking plate against said main hollow body to such an extent that said protrusions are deformed and get stuck in said flared corner of said annular groove.  
     
     
       2. The metal head as claimed in  claim 1 , wherein said annular groove has a cross section shaped as a dovetail. 
     
     
       3. The metal head as claimed in  claim 1 , wherein each of said protrusions has an inclined face opposite to said flared corner to facilitate its deformation and its getting stuck in said flared corner. 
     
     
       4. The metal head as claimed in  claim 1 , wherein said annular groove is applied with an adhesive, such as epoxy resin, to contribute to the connection of said main hollow body and said striking plate. 
     
     
       5. The metal head as claimed in  claim 1 , wherein said spaced protrusions includes a plurality of first protrusions arranged in an inner imaginary circle and a plurality of second protrusions arranged in an outer imaginary circle equidistant from said inner imaginary circle in normal directions throughout said imaginary circles, and wherein said first and second protrusions are spaced equidistantly one from another in the same imaginary circle and are arranged in an aligned relationship with said protrusion in the other imaginary circle. 
     
     
       6. The metal head as claimed in  claim 1 , wherein said spaced protrusions includes a plurality of first protrusions arranged in an inner imaginary circle and a plurality of second protrusions arranged in an outer imaginary circle equidistant from said inner imaginary circle in normal directions throughout said imaginary circles, and wherein said first and second protrusions are spaced equidistantly one from another in the same imaginary circle and are arranged in a staggered relationship with said protrusion in the other imaginary circle. 
     
     
       7. The metal head as claimed in  claim 1 , wherein said annular groove has an entrance slightly wider than the width of said flange. 
     
     
       8. The metal head as claimed in  claim 1 , wherein said annular groove has a depth subsequently equal to the height of said flange but slightly smaller than the sum of the heights of said flange and said protrusion. 
     
     
       9. The metal head as claimed in  claim 1 , wherein said spaced protrusions are arranged in a single imaginary circle adjacent to an inner side of said flange, and wherein said annular groove is flared inward to form an flared inner corner in correspondence to said protrusions. 
     
     
       10. The metal head as claimed in  claim 1 , wherein said spaced protrusions are arranged in a single imaginary circle adjacent to an outer side of said flange, and wherein said annular groove is flared inward to form an flared outer corner in correspondence to said protrusions.